Numbers 88,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

81,000,00082,000,00083,000,000 – 84,000,000

85,000,00086,000,00087,000,00088,000,00089,000,000

All Numbers  & [1M] & [10M- [20M] - [30M] - [40M] - [50M] - [60M] - [70M] - [80M] - [90M]  &  [100M]

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88,110,536

[Math.]  A pair of amicable numbers (78088504, 88110536).

88,144,630

[Math.]  A pair of amicable numbers (88144630, 102814490), one of 5 pairs involving an 8-digit and a 9-digit number.

88,190,881

[Math.]  93912 = 88,190,881.

88,888,888

[Math.]  22,222,2223 = 10973936570644722085048    and

1097393+65706447+22085048 = 88,888,888

88,888,8883 = 702331940521262213443072 and

70233194+05212622+13443072 = 88,888,888.

[Math.]

9×9+(9–2) = 88

98×9+(9–3) = 888

987×9+(9–4) = 8,888

9,876×9+(9–5) = 88,888

98,765×9+(9–6) = 888,888

987,654×9+(9–7) = 8,888,888

9,876,543×9+(9–8) = 88,888,888

98,765,432×9+(9–9) = 888,888,888

987,654,321×9+(9–10) = 8,888,888,888

9,876,543,210×9+(9–11) = 88,888,888,888

98,765,432,099×9+(9–12) = 888,888,888,888

= 98,765,432,100×9–12.

[Math.]

8×8+13 = 77

88×8+13 = 717

888×8+13 = 7117

8888×8+13 = 71117

88,888×8+13 = 711,117

888,888×8+13 = 7,111,117

8,888,888×8+13 = 71,111,117

88,888,888×8+13 = 711,111,117

888,888,888×8+13 = 7,111,111,117

8,888,888,888×8+13 = 71,111,111,117

...

[Math.]

121×(1+2+1) = 484 = 222

12,321×(1+2+3+2+1) = 110,889 = 3332

12,34,321×(1+2+3+4+3+2+1) = 19,749,136 = 4,4442

123,454,321×(1+2+3+4+5+4+3+2+1) = 3,086,358,025 = 55,5552

12,345,654,321×(1+2+3+4+5+6+5+4+3+2+1) = 444,443,555,556 = 666,6662

1,234,567,654,321×(1+2+3+4+5+6+7+6+5+4+3+2+1) =

= 60,493,815,061,729 = 7,777,7772

123,456,787,654,321×(1+2+3+4+5+6+7+8+7+6+5+4+3+2+1) =

= 7,901,234,409,876,544 = 88,888,8882

12,345,678,987,654,321×(1+2+3+4+5+6+7+8+9+8+7+6+5+4+3+2+1)

= 999,999,998,000,000,001 = 999,999,9992.

[Phone]  The most expensive telephone number in the world, 86-28-8888-8888, is of Sichuan Airlines in Chengdu, Sichuan, China. It was bought during an auction for 2.33 million yuan (U.S. \$280,723). The number 8 is considered lucky in China, as it is similar to the Cantonese word for “getting rich”.

88,891,111

[Math.]  A special triangular number (sum of all integers from 1 to 13,333): 88,891,111 = 1+2+…+13332+13333.

xy,abc,def

[Math.]  For any xy = 10 to 99, there are always six 6-digit numbers abc,edf such that the sum (xy+abc,def) is equal to one of 6 digit-rotations of 142,857 and the number xy,abc,def is a multiple of 142,857.

For any xy = 10 to 99, there are always twelve 6-digit numbers abc,edf such that the sum (xy+abc,def) is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number xy,abc,def is a multiple of 76,923.